Lamp-glass extension.



E. P. SCHULTZ.

LAMP GLASS EXTENSION.

APPLICATION FILED MAR. 9, 19.4.

K. k 9 w Patented Apr. 20, 1915.

THE NORRIS PETERS Ca. PHOTO-LITHQ. WASHINGTON. D. C.

ERNEST P. SCHULTZ, OF HAMILTON, ONTARIO,

CANADA.

LAMP-GLASS EXTENSION.

aser/a.

Application filed March 9, 1914.

To all whom it may concern:

Be it known that I, ERNEST PHILIP SCHULTZ, a subject of the King ofGreat Britain, and a citizen of the Dominion of Canada, residing at 154York street, in the city of Hamilton, in the county of Wentworth, in theProvince of Ontario, Dominion of Canada, have invented a certain new anduseful Lamp-Glass Extension, of which the following is a specification.

This invention relates to an extension for lamp glasses and it has moreparticular reference to such glasses as are commonly employed on coaloil lamps for domestic and general lighting.

The main object of my invention is to provide a simple and effectivemeans whereby the lighting efficiency is considerably increased bysupplying more oxygen to the flame.

A further object is to furnish a simple means whereby a great economy infuel consumption is attained by reducing the draft tending to disturbthe flame.

With these objects in view my invention consists in the novelconstruction of lamp glass extension hereinafter fully described andclaimed in the appended claims.

The accompanying drawing is an illustration of one practical embodimentof my invention, Figure 1, being a full sized elevation thereof asadapted for the ordinary standard type of lamp glass having a corrugatedupper edge. Fig. 2, is a vertical section through the same.

According to the form of my invention illustrated the extensioncomprises a main or cylindrical body portion of sheet metal which isadapted to seat snugly within the top of the lamp glass or chimney 2,shown in fragmentary form by the dotted lines and broken lower edge inFig. 1.

3, 3, are claws integral with said body portion 1, adapted to firmlyclamp the extension on the top of the lamp glass or chimney 2.

4, 4, are vertical projections from the up- Specification of LettersPatent.

Patented Apr. 2t), 1915. Serial No. 823,475.

per edge of the body portion 1, and they have seated and secured thereona hood or canopy 5, said canopy or hood being of concavo-convexformation and of a diameter sufiiciently large to project beyond theexterior peripheral wall of the body portion 1. It is to be noted thatthe projections 4, 4, and canopy or hood 5, form air spaces or draftopenings 6, 6. Also that the body portion 1, claws 3, 3, and projections4, 4, are all stamped out from one sheet of metal and then fashioned asshown the joining edges being brazed or secured together. The canopy 5,effectively prevents lateral or down drafts through the openings 6, 6.

From the foregoing it will be seen that by my invention I provide a neatand effective device for the purposes specified, and I do not limitmyself to the precise details or shape and proportions of the partsillustrated and described.

Having thus described my invention what I claim as new and desire tosecure by Letters Patent, is

An extension for lamp glasses embodying an imperforate sheet metalcylindrical body portion substantially coequal in diameter with theupper edge of the lamp glass, said body portion having integral clawsbent backwardly thereupon and then bent into hook formation to adaptthem to engage over the usual enlarged edge of a lamp glass while thelower edge of the body portion enters within said upper edge of the lampglass and lies but slightly below the horizontal plane thereof, uprightextensions carried by the upper edge of the body portion and a canopycarried by saidextensions which is of greater diameter than said bodyportion.

Signed at Hamilton, county of Wentworth, Province of Ontario, Dominionof Canada, this 20th day of February, A. D. 1914.

E. P. SCHULTZ. In the presence of ALFRED T. BRA'ITON, GERTIE NICHOLSON.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

